| 摘要 |
PROBLEM TO BE SOLVED: To provide a non-speckle laser projection type display which generates images free from speckles with high resolution. SOLUTION: The non-speckle laser projection type display includes a liquid crystal material 16. A projection type display screen includes the liquid crystal material 16 which attains an extremely scattered state when there is no impression of driving voltage 22. When a high-frequency low-voltage signal is impressed to the liquid crystal projection type display screen, liquid crystal molecules 15 vibrate slightly at a frequency higher than 60 Hz, by which the speckle patterns are rapidly changed and to negate the speckles and to make the speckle invisible. In addition, the non-speckle laser display system including a laser image source and the liquid crystal projection type display screen is provided as well.
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